a P-necessity: A History of Light and Lighting.

[Glenn Scheper]

A vast timeline of lighting development
mixed in with history, theatre, ...
even light bulb jokes!

In 1678 Huygens discovered the polarization of light by double refraction in 
calcite.
  -- http://www.mts.net/~william5/history/hol.htm

Yours truly,
Glenn Scheper
http://home.earthlink.net/~glenn_scheper/
glenn_scheper + at + earthlink.net
Copyleft(!) Forward freely.